"Tell me about a time you failed" is almost guaranteed. Interviewers want to see self-awareness and growth.
Good failure stories include:
- A real mistake (not a humble brag)
- Your role in the failure
- How you identified and fixed the problem
- What you learned and changed
Examples for ML:
- Model that performed well offline but failed in production
- Feature that leaked target information
- Project that took too long due to scope creep
Interview tip: Choose a failure with a good learning outcome. Show that you've internalized the lesson.